CN105738289B - Remote gas detection method and remote gas detection device - Google Patents
Remote gas detection method and remote gas detection device Download PDFInfo
- Publication number
- CN105738289B CN105738289B CN201610201312.8A CN201610201312A CN105738289B CN 105738289 B CN105738289 B CN 105738289B CN 201610201312 A CN201610201312 A CN 201610201312A CN 105738289 B CN105738289 B CN 105738289B
- Authority
- CN
- China
- Prior art keywords
- laser
- reflection
- detection
- detection device
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 42
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000003345 natural gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
Abstract
The invention discloses a kind of remote gas detection methods, one detection laser is provided, the detection laser issues the transmitting light through gas to be detected, the transmitting light is received by a reception device after penetrating gas to be detected and forms reflection laser, the reflection laser is incident upon a detection device, and the detection device tests and analyzes reflection laser.A part of light is incident on a position sensor in the reflection laser, the signal for detecting the part reflection laser is transferred in a location signal transmitter by the position sensor, the position error signal of the part reflection laser is transmitted to the reception device by the location signal transmitter, the reception device does out position adjustment according to the position error signal further, and the reception device has the reflecting mirror that the reflection laser is reflexed to the detection device.The detection to gas, the high sensitivity of detection mode are realized by the technical solution for issuing with receiving light.
Description
Technical field
The invention belongs to gas detection technology fields, more specifically to a kind of remote gas detection method and remotely
Gas-detecting device.
Background technique
With the industrialized development of today's society, outstanding day by day, greenhouse effects, acid rain, ozone layer the problem of air pollution
Destruction the problems such as it is extremely urgent, and the key solved these problems is quickly and accurately to detect that these are toxic, have
The gaseous matter of pollution.Such as in all types of industries, chimney is the main path of all kinds of air pollutant discharges, real-time monitoring
The polluter emission behaviour of chimney has great significance to the control of polluter and the improvement of environment.For another example at present
The phenomenon that gas pipeline leakage, is very serious, and the amount of natural gas of leakage will account for the 10% of total amount of natural gas, this is not only to provide
The serious waste in source, there is also security risks, a series of problems, such as damaging to environment.Therefore, develop it is a set of can be quick
Detection, and the high equipment of accuracy in detection is necessary.
The method for collecting scattering light, but quilt are mainly passed through for the method for real-time of chimney and natural gas line at present
Air or the light of other substances scattering are very faint, and the scattering light that detection device can be collected into is also very limited, therefore
Detection sensitivity is also difficult to improve；Detection sensitivity is improved in order to be collected into more scattering light as much as possible, usual light harvesting dress
The bore set is made greatly, therefore the volume of whole device is just very huge.
Therefore, it is necessary to design the new gas detection method of one kind and remote gas detection device to overcome the above problem.
Summary of the invention
For the above-mentioned problems in the prior art, the purpose of the present invention is to provide a kind of high remote of detection sensitivity
Journey gas detection method.
To achieve the goals above, The technical solution adopted by the invention is as follows: a kind of remote gas detection method, provides one
Detection laser, the detection laser issue the transmitting light through gas to be detected, and the transmitting light penetrates gas to be detected
Reflection laser is received and is formed by a reception device afterwards, the reflection laser is incident upon a detection device, the detection device pair
Reflection laser is tested and analyzed.A part of light is incident on a position sensor, the position sensor in the reflection laser
The signal for detecting the part reflection laser is transferred in a location signal transmitter, the location signal transmitter is the portion
The position error signal of point reflection laser is transmitted to the reception device, the reception device according to the position error signal come
Do out position adjustment further, the reception device has the reflecting mirror that the reflection laser is reflexed to the detection device.
Further, the reception device also has the position control in changeable mirror reflection direction, when the spy
When survey device does not receive the reflection laser, the position control is adjusted.
Further, it is equipped with the beam expanding lens expanded to reflection laser above the reflecting mirror, the beam expanding lens is convex lens
Mirror or concavees lens.
Further, the reception device is located at the different sensing points in the upper side of a gas pipeline, the detection laser
Device and the detection device are located at the side-lower of the gas pipeline, data analysis pair of the detection device to different sensing points
Than the judgement signal that the detection device is converted to according to the data of different sensing points is to determine whether there is leakage point.
Further, the reception device is in first position, height above sea level H, and the detection device is swashed by reflection
Light obtains the mean concentration of certain or a variety of under test gas molecules in height above sea level H；The reception device is in second again
Set, height above sea level h, the detection device by the available height above sea level h of reflection laser it is described certain or it is a variety of to
Survey the mean concentration of gas molecule, the mean concentration of certain or a variety of under test gas molecules according to Different Altitude, meter
Calculate the variation that certain or a variety of under test gas molecules occur with the difference of height above sea level.
To achieve the goals above, the present invention is also the technical solution adopted is as follows: a kind of remote gas detection device, packet
Include the detection laser of transmitting laser, the reception device for receiving the laser and the reflection laser and the institute for receiving reflection
The detection device of laser is stated, the detection laser and the detection device are located remotely from the lower section of gas to be detected, described to connect
Receiving apparatus is located at close to the top of the gas to be detected, and remote gas detection device also has reflection fraction energy laser
Beam splitter, position sensor and location signal transmitter, the fraction energy laser is incident on the position sensor, described
The laser is transferred to the location signal transmitter, the position of laser described in the location signal transmitter by position sensor
Deviation is transmitted to the reception device.
Further, the reception device has laser reflection to the reflecting mirror of the detection device.
Further, the reception device also has the position control of the reflection direction of changeable reflective mirror, when described
When detection device does not receive the laser, the position control is adjusted.
Compared with the prior art, remote gas detection method and remote gas detection device of the present invention have the beneficial effect that
The detection to gas is realized by the technical solution for issuing with receiving light, and the high sensitivity of detection mode passes through beam splitter, position
It sets detector, location signal transmitter adjustment reception device position and accurately and is steadily incident on signal detecting device to realize.
Detailed description of the invention
Fig. 1 is the operation schematic diagram of remote gas detection device and detection method of the present invention；
Fig. 2 is the structural schematic diagram of the reception device of remote gas detection device of the present invention；
Fig. 3 is the work flow diagram of remote gas detection method of the present invention；
Fig. 4 is the partial structure diagram of remote gas detection device of the present invention.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
As shown in Figures 1 to 4, a kind of remote gas detection method is issued to gas to be detected by detection laser 4 and is sent out
It penetrates light (laser), transmitting light is injected through reflection laser, reflection laser is formed after being received after gas to be detected by a reception device 1
To detection device 3, detection device 3 tests and analyzes reflection laser.The mode of detection and analysis can be differential laser technology
(DOAS), it is also possible to tunable semiconductor spectral technique (TDLAS), herein without limitation to specific detection method.
As shown in Fig. 2, reception device 1 of the invention is a kind of aircraft, such as unmanned plane, quadrotor drone or six rotations
Wing unmanned plane can continuously be stopped in a certain height.When needing to detect, reception device 1 is located at gas zones 2 to be detected
Side.Reception device 1 has the reflecting mirror 102 of laser reflection to detection device 3, and reflecting mirror 102 is installed on position control
On device 101, reflecting mirror 102 can realize the reflection direction of change reflection laser by adjusting position control 101.Make
The laser that must be incident on above reflecting mirror 102 can reflect in different directions.
As shown in Figure 3, Figure 4, in order to enable detection device 3 can steadily receive signal, (i.e. reflection laser is incident on spy
The position surveyed in device 3 remains unchanged), reflection laser 401 has fraction energy by 5 beam splitting of beam splitter, reflection laser
Light 402 be incident in a position sensor 6, another light 403 largely reflected is incident upon detection device 3.Position sensor 6
The position signal of the light 402 for the fraction energy for detecting reflection is transferred in a location signal transmitter 7, position signal
The effect of transmitter 7 is that the position deviation of reflection laser 401 is transmitted to reception device 1 by way of radio wave, is received
Device 1 does out position adjustment according to this position error signal, present embodiment, can lead to move integrally reception device 1 or
Person meets the reflection laser angle of the sending of reflecting mirror 102 by adjusting the position control 101 of reception device 1, so that instead
Penetrating laser can accurately and steadily be incident in signal detecting device 3.Signal detecting device 3 can accurately pass through transmitting light
Confirmed.
To reach better test effect, under particular circumstances, (can not be schemed with being equipped with beam expanding lens above reflecting mirror 102
Show) laser is expanded, such light is distributed more uniform after the diffuser plate and optical film of beam expanding lens.Beam expanding lens can
To be convex lens or concavees lens.
The present invention wherein one embodiment, remote gas detection applies to detection gas pipeline (such as natural gas, gas pipeline
Deng) on have No leakage or confirmation leakage point, reception device 1 (unmanned plane) be located at natural gas line upper side, detection swash
Light device 4 and detection device 3 are located at the side-lower of natural gas line, the laser light natural gas line that detection laser 4 emits
Top and reach reception device 1 (unmanned plane), the reflecting mirror 102 of unmanned plane returns laser reflection in detection device 3, detection device
The data of 3 pairs of differences analyze comparison, and the judgement signal that detection device 3 is converted to according to the data of difference is to determine whether have
Leakage point.Wherein detection device 3 and detection laser 4 can be placed on a vehicle, and the speed of vehicle is basic and unmanned plane
Speed is consistent.
Another implementation of the present invention, in Atmospheric Survey scientific experiment, for understanding the various molecules in atmosphere in difference
Height or different location.Because the laser radar of the prior art can not detect the atmospheric molecule concentration of different height, can only obtain
To the mean mass concentration in a certain altitude ranges；Want to obtain the concentration of the gas molecule of different altitude height at present, only
The gas of different altitude height can be collected by airborne mode or is examined in real time with airborne mode in different height above sea level
It surveys.The detection mode is time-consuming and laborious.
Remote gas detection of the present invention applies in Atmospheric Survey, and reception device 1 (unmanned plane) is in first position, sea
Degree of lifting is H, and the mean concentration of certain or a variety of under test gas molecules in height above sea level H is obtained by reflection laser；It will connect again
Receiving apparatus 1 (unmanned plane) is in the second position, height above sea level h, by the available height above sea level h of reflection laser certain or
The mean concentration of a variety of under test gas molecules of person.According to certain or a variety of under test gas molecules of Different Altitude in this height above sea level
Interior mean concentration, so that it may calculate the variation that certain or a variety of under test gas molecules occur with the difference of height above sea level.
Likewise, change in same level direction, also certain available testing molecule concentration variation in the horizontal direction.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (6)
1. a kind of remote gas detection method provides a detection laser, the detection laser, which issues, penetrates gas to be detected
Laser, received by a reception device after the laser light of sending gas to be detected and form reflection, reflection laser is incident upon one
Detection device, the detection device test and analyze the reflection laser, it is characterised in that: one in the reflection laser
A position sensor is incident in light splitting, and the signal for detecting the part reflection laser is transferred to a position by the position sensor
In signal projector, the position error signal of the part reflection laser is transmitted to the reception and filled by the location signal transmitter
It sets, the reception device does out position adjustment according to the position error signal；
The reception device has the reflecting mirror that the reflection laser is reflexed to the detection device；
The reception device also has the position control for changing the reflection specular reflection direction, when the detection device does not connect
When receiving the reflection laser, the position control is adjusted.
2. remote gas detection method as described in claim 1, it is characterised in that: the reflection laser passes through a beam splitter
Beam splitting.
3. remote gas detection method as described in claim 1, it is characterised in that: be equipped with above the reflecting mirror and swash to reflection
The convex lens or concavees lens that light is expanded.
4. remote gas detection method as described in claim 1, it is characterised in that: the reception device is located at close to a gas
The different sensing points of pipeline, the detection laser and the detection device are far from the gas pipeline, the detection device pair
The data of the difference sensing point analyze comparison, the judgement signal that the detection device is converted to according to the data of different sensing points
To determine whether there is leakage point.
5. remote gas detection method as described in claim 1, it is characterised in that: the reception device is in first position,
Its height above sea level is H, and the detection device obtains certain or a variety of under test gas molecules in height above sea level H by reflection laser
Mean concentration；The reception device is in the second position, height above sea level h again, the detection device passes through reflection laser
The mean concentration of certain or a variety of under test gas molecules in available height above sea level h, according to Different Altitude certain
Kind perhaps the mean concentration of a variety of under test gas molecules calculates certain or a variety of under test gas molecules with height above sea level
Different and generation variation.
6. a kind of remote gas detection device comprising emit the detection laser of laser, for receiving the laser and reflection
The reception device of the laser and the detection device for receiving the laser reflected, the detection laser and the detection device
It is located remotely from the lower section of gas to be detected, the reception device is located at close to the top of the gas to be detected, it is characterised in that:
Remote gas detection device also has beam splitter, position sensor and the location signal transmitter of reflection fraction energy laser,
The fraction energy laser is incident on the position sensor, and the laser is transferred to the position by the position sensor
The position deviation of the laser is transmitted to the reception device by signal projector, the location signal transmitter；
The reception device has laser reflection to the reflecting mirror of the detection device；
The reception device also has the position control of the reflection direction of changeable reflective mirror, when the detection device does not connect
When receiving the laser, the position control is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610201312.8A CN105738289B (en) | 2016-03-31 | 2016-03-31 | Remote gas detection method and remote gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610201312.8A CN105738289B (en) | 2016-03-31 | 2016-03-31 | Remote gas detection method and remote gas detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105738289A CN105738289A (en) | 2016-07-06 |
| CN105738289B true CN105738289B (en) | 2019-04-26 |
Family
ID=56252633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610201312.8A Active CN105738289B (en) | 2016-03-31 | 2016-03-31 | Remote gas detection method and remote gas detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105738289B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612952A (en) * | 2018-11-27 | 2019-04-12 | 深圳中兴网信科技有限公司 | Gas componant and concentration detection method, system and readable storage medium storing program for executing |
| CN110264677B (en) * | 2019-06-03 | 2020-12-11 | 北京讯腾智慧科技股份有限公司 | Gas pipeline gas leakage monitoring system and method |
| CN110887805A (en) * | 2019-11-20 | 2020-03-17 | 上海化工研究院有限公司 | Regional anomalous gas detection device of multiple spot sight |
| CN113791039A (en) * | 2020-05-25 | 2021-12-14 | 中国石油化工股份有限公司 | Unmanned aerial vehicle-mounted detection method and system for hazardous chemical substance leakage |
| CN115343413A (en) * | 2021-05-13 | 2022-11-15 | 南京微纳科技研究院有限公司 | Gas detection system, method, data processing module and mobile device |
| CN114441476A (en) * | 2022-03-01 | 2022-05-06 | 南京精筑智慧科技有限公司 | Wisdom building site environment integrated monitoring system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619807A (en) * | 2009-07-24 | 2010-01-06 | 中国科学院上海技术物理研究所 | System and method for monitoring airborne natural gas line leakage |
| CN101694265A (en) * | 2009-09-29 | 2010-04-14 | 中国科学院上海技术物理研究所 | Real-time concentration calibration method of leakage detecting laser radar for on-board natural gas pipeline |
| US8823938B2 (en) * | 2012-01-11 | 2014-09-02 | The Aerospace Corporation | System, apparatus, and method for tracking atmospheric differential absorption |
| CN104297218A (en) * | 2013-07-15 | 2015-01-21 | 中国科学院沈阳自动化研究所 | In situ on-line detection device and method for remote metallurgy liquid metal component |
| CN105021567A (en) * | 2015-05-04 | 2015-11-04 | 南京大学 | Non-contact remote laser atmospheric environmental monitoring system and method |
| CN105334187A (en) * | 2015-11-12 | 2016-02-17 | 新奥科技发展有限公司 | Gas detection system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080029702A1 (en) * | 2006-07-23 | 2008-02-07 | Wei Xu | Method and apparatus for detecting methane gas in mines |
-
2016
- 2016-03-31 CN CN201610201312.8A patent/CN105738289B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619807A (en) * | 2009-07-24 | 2010-01-06 | 中国科学院上海技术物理研究所 | System and method for monitoring airborne natural gas line leakage |
| CN101694265A (en) * | 2009-09-29 | 2010-04-14 | 中国科学院上海技术物理研究所 | Real-time concentration calibration method of leakage detecting laser radar for on-board natural gas pipeline |
| US8823938B2 (en) * | 2012-01-11 | 2014-09-02 | The Aerospace Corporation | System, apparatus, and method for tracking atmospheric differential absorption |
| CN104297218A (en) * | 2013-07-15 | 2015-01-21 | 中国科学院沈阳自动化研究所 | In situ on-line detection device and method for remote metallurgy liquid metal component |
| CN105021567A (en) * | 2015-05-04 | 2015-11-04 | 南京大学 | Non-contact remote laser atmospheric environmental monitoring system and method |
| CN105334187A (en) * | 2015-11-12 | 2016-02-17 | 新奥科技发展有限公司 | Gas detection system |
Non-Patent Citations (2)
| Title |
|---|
| 管线泄漏远程探测***;王武艺等;《国外油田工程》;20060430;第22卷(第4期);第35-37页 |
| 红外气体检测技术在天然气安全生产中的应用;李黎等;《天然气工业》;20110131;第31卷(第1期);第96-99、103、118-119页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105738289A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105738289B (en) | Remote gas detection method and remote gas detection device | |
| CN205374298U (en) | Trace gas concentration detection apparatus based on TDLAS | |
| US10704981B2 (en) | Remote leak detection system | |
| Barchyn et al. | A UAV-based system for detecting natural gas leaks | |
| US10690562B2 (en) | Apparatus and methods for location and sizing of trace gas sources | |
| US10473818B2 (en) | Hub and spoke system for detecting and locating gas leaks | |
| CN106769974B (en) | Gas concentration Two dimensional Distribution on-line detecting system and method | |
| CN104749396A (en) | Wavelength modulating-TDLAS based high-sped air flowing speed detecting system | |
| CN106644942A (en) | Photoacoustic absorption cell and online measuring device for multiple optical parameters of atmospheric particulate matters | |
| CN201152458Y (en) | Urban gas pipeline leakage detection and positioning system | |
| CN206818876U (en) | Ozone sounding Difference Absorption quantum laser radar installations based on single Raman pipe | |
| US8445850B2 (en) | Optical remote sensing of fugitive releases | |
| CN108152207A (en) | Telemetering motor vehicle tail system | |
| CN101625306B (en) | Device for measuring gas concentration | |
| Siebenaler et al. | Methane detectors challenge: Low-cost continuous emissions monitoring | |
| Alden et al. | Methane leak detection and sizing over long distances using dual frequency comb laser spectroscopy and a bootstrap inversion technique | |
| Robinson et al. | DIAL measurements for air pollution and fugitive-loss monitoring | |
| EP3543740B1 (en) | Anti-pollution self-calibrating remote sensing system and method thereof | |
| CN207610987U (en) | Terahertz detection air high-risk chemical distribution apparatus | |
| CN207964606U (en) | Telemetering motor vehicle tail system | |
| CN206515231U (en) | A kind of humidity measuring instrument based on Difference Absorption technology | |
| Zimmerman et al. | Tunable Diode Lase Absorption Spectrometers for CO2 Wellhead and Pipeline Leakage Monitoring: Experiences from Prototype Testing at the Illinois Basin–Decatur Project, USA | |
| Philbrick et al. | 1.1 REMOTE SENSING OF CHEMICAL SPECIES IN THE ATMOSPHERE | |
| Festa-Bianchet | Design and application of a novel optical methane flow sensor to quantify methane vent sources at upstream oil and gas sites | |
| Frish | Laser-based sensors for addressing climate change |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231129 Address after: 241200 Chungu 3D Printing Industrial Park, Fanchang Economic Development Zone, Wuhu City, Anhui Province Patentee after: Anhui Zhongke Spring Valley Laser Industry Technology Research Institute Co.,Ltd. Address before: No. 19 Hengfei Road, Nanjing Economic and Technological Development Zone, Nanjing, Jiangsu Province, 210000 Patentee before: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY |